Page History

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Adobe donated the source code to the Falcon compiler as revision 1383121 on September 10, 2012. It currently lives at incubator/flex/falcon/trunk. A development branch at incubator/{flex/falcon/branches/develop}} will follow after the build scripts have been tested and debugged.

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• It should compile faster for both full and incremental compiles, especially for multi-project workspaces.
• It should require less memory, especially for multi-project workspaces.
• It should be useful as a code-intelligence engine and incremental compiler for an integrated development environment, and not just as a command-line compiler.
• It should have a design that is easy to understand and to evolve.
• It should generate better bytecode for improved runtime performance.

Source Code

The Falcon trunk 'develop' branch is now available in Apache's Subversion GIT repository at https://svngit-wip-us.apache.org/repos/asf/incubator/flex/falcon/trunkImage Removed-falcon.git. You can download it with any Subversion GIT client.

If you prefer to browse it with ViewVC, use http://svn.apache.org/viewvc/incubator/flex/falcon/trunkImage Removed.

Binary Distributions

No binary distributions are available. Perhaps someone will volunteer to set up automated builds and a build download page?

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The main, eclipse, or javadoc target will do a one-time download of five third party JARs:

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If you do ant -q main (where the -q switch means "quiet" and turns off a lot of noisy output), the output the first time should look like this:

$ ant -q
     [echo] JFLEX_JAR is d:/jflex-1.4.3/jflex/lib/JFlex.jar
     [echo] Obtaining lib/antlr.jar
     [echo] Obtaining lib/commons-cli.jar
     [echo] Obtaining lib/commons-io.jar
     [echo] Obtaining lib/guava.jar
     [echo] Obtaining lib/jburg.jar
     [echo] Obtaining lib/lzma.jar
     [echo] Building lib/lzma.jar
     [echo] Deleting 'generated' directory
 Generating RawASTokenizer
    [echo] Generating RawASTokenizer and RawASDocTokenizer
  RawASDocTokenizer
    [echo] Generating RawMXMLTokenizer
    [echo] Generating ASParser and ASTokenTypes
    [antlr] ANTLR Parser Generator   Version 2.7.7 (20060906)   1989-20057 (20060906)   1989-2005
    [echo] Generating MetadataParser and MetadataTokenTypes
    [antlr] ANTLR Parser Generator   Version 2.7.7 (20060906)   1989-2005
     [echo] Generating CmcEmitterCSSLexer and CSSParser
     [echo] Generating CSSLexer, CSSParser, and CSSTree
     [echo] Generating CSSEmitterCmcEmitter
     [echo] Generating RawMXMLTokenizerCSSEmitter
     [echo] Compiling Java code
     [echo] Creating generated/dist/sdk/lib/compiler.jar
     [echo] Creating generated/dist/sdk/lib/falcon-asc.jar
     [echo] Creating generated/dist/sdk/lib/falcon-mxmlc.jar
     [echo] Creating generated/dist/sdk/lib/falcon-compc.jar
     [echo] Creating generated/dist/sdk/lib/falcon-optimizer.jar
     [echo] Creating generated/dist/sdk/lib/falcon-swfdump.jar
     [echo] Creating lib/aet.jar
     [echo] Creating generated/dist/sdk/lib/flexTasks.jar
    [echo] Copying Apache SDK
    [echo] Building support.swc
     [echo] compiler main completed on 09/14/2012 1011:1332:3937 AMPM

BUILD SUCCESSFUL
Total time: 1 minute 16 seconds

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• Download the necessary third-party JAR files.
• Generate Java-based lexer classes from JFlex .lex files, Java-based parser classes from ANTLR .g files, and Java-based BURM classes from JBurg .jbg files.
• Compile the Java code (both the code that's in Subversion GIT and the lexers/parsers/BURMs that are generated by the previous step).
• Create the JAR files that are the Falcon deliverables.
• Create a SWC file that needs to be used when compiling Flex with Falcon (because Falcon generates different code for CSS than the old compiler).

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Q: Where is the specification for ActionScript ByteCode (ABC)?

A: http://www.adobe.com/content/dam/Adobe/en/devnet/actionscript/articles/avm2overview.pdf^{Image Removed}

Q: What is a semantic checker?

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